Pencil sharpener



FIG. 1 is a side, top, perspective view of the pencil sharpener;

FIG. 2 is a left side view, with bottom feet thereof and a rearwardly projecting element shown thereof in phantom, the right side view being a mirror image thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof with additional elements in the bottom surface thereof shown in phantom.

The broken lines showing feet and features on the bottom and at the rear are included for the purpose of illustrating environment and form no part of the claimed design. 

The ornamental design for a pencil sharpener, as shown and described. 